diff --git a/libraries/AP_Motors/AP_MotorsHeli.h b/libraries/AP_Motors/AP_MotorsHeli.h
index 3497febee7..0651a2fb29 100644
--- a/libraries/AP_Motors/AP_MotorsHeli.h
+++ b/libraries/AP_Motors/AP_MotorsHeli.h
@@ -60,6 +60,7 @@ public:
         _servo_4(yaw_servo),
         _rc_8(rc_8)
     {
+		AP_Param::setup_object_defaults(this, var_info);
         throttle_mid = 0;
         _roll_scaler = 1;
         _pitch_scaler = 1;
diff --git a/libraries/AP_Motors/AP_Motors_Class.cpp b/libraries/AP_Motors/AP_Motors_Class.cpp
index 495d1c37c6..25d8706bdb 100644
--- a/libraries/AP_Motors/AP_Motors_Class.cpp
+++ b/libraries/AP_Motors/AP_Motors_Class.cpp
@@ -55,6 +55,8 @@ AP_Motors::AP_Motors( uint8_t APM_version, RC_Channel* rc_roll, RC_Channel* rc_p
 {
     uint8_t i;
 
+    AP_Param::setup_object_defaults(this, var_info);
+
     top_bottom_ratio = AP_MOTORS_TOP_BOTTOM_RATIO;
 
     // initialise motor map